Electromechanical transforming device



H. M. WILLIAMSON ELECT/ROMECHANICAL TRANSFQRMING DEVICE IN VEN TOR.

Patented Oct. 20, 1925.

UNITED STATES HENRY KERLE WILLIAMSON, OF OAK PARK, ILLINOIS.

ELECTROEEGHANICAL TBANSFOBMING DEVICE.

Application filed July 22, 1925. Serial m. 45,432. i

To all whom it may concern.

Be it known that I, HENRY MERLE WIL- LIAMSON, a citizen of the UnitedStates, re-

siding at 312 Washington Bvd., Oak Park, county of Cook,Stateof-Illinois, have invented a new and useful Improvement in anElectromechanical Transforming Device, of which the following is aspecification with the appended claims.

This invention relates to electro-mechanical transforming devices suchas are used for transforming electrical energy into mechanical and soundenergy, being particularly suitable for telephonic receiving apparatusand radio loudspeaking devices.

The prime object of this invention is to produce a device that will givethe highest efliciency in volume and quality of articulation and music,where a minimum amount of distortion is desired.

Another object of this invention is toneutralize mechanical andelectrical periodicities such as exist in the common type of telephonicapparatus.

Another object of this invention is to provide for an electricalreceiver with margin of clearance in its structure between stationaryand moveable parts to eliminate adjustments.

Other objects will be apparent from the following description:

Fig. 1 shows non-magnetic spacers; Fig. 2 shows an armature and atorsional spring for mounting the armatures; Fig. 3 shows per spectiveof armature assembly; Fig. 4 shows perspective of the double armatureand diaphragm assembly; Fig. 5 shows a schematic drawing of the aparatus; Fig. 6 shows one of the two pole pleces with their extensions;and Fig. 7 shows an end view of the assembled parts.

The parts 1 and 1 shown at Fig. 1 are made up of brass or some othernon-magnetic material and are laced on each side of the pole pieces 9 an10 Figs. 5 and 7. Projectlons 16 fit into and are riveted fast to thepole pieces. A detail of the holes is shown in the pole piece Fig. 6 at18. Projections 15 are for receiving torsional sprin 2, the holes 17being square in order to m e a snug fit for riveting the projections 15after assembly. 3 in Fig. 2 is one of the armatures which fits into thehole 19 of the spring 2 and may be soldered or otherwise fixed theretori id at the central point of the armature. ig. 3 shows the spring, thearmature and connecting rod assembled in sub-assembly. The rod 4 extends to the diaphragm or other devices desired for operating. Fig. 4shows a schematic drawing of the double armature with their rods 4 and 4joined to a third rod 5 and attached at 6 by soldering or other wise, tothe diaphragm 7 with its washer 8 for supporting said diaphragm. Thesprings 2 and 2" in Fig; 4 may be of different thickness of metal inorder to give them unlike periodicities. By having two armatures ofdifferent periodicities and a diaphragm with an entirelyseparatedjperiodiclty, the resultant period 1s a very much dampedoscillation, and may be said to have no period, or aperiodic incharacter.

Fig. 5 shows two permanent Ina ets 11 and 12 and a theoretical view of te ma netic and electrical circuits. Four win ings '13 constitute theelectro-ma ets. Said electro-magnets may be woun on spools or bobbins asshown at 14 Fig. 7,'

one being placed on either side of the springs 2* and 2 Fig. 5. Thepole-piece extensions 9, 9, 10 10 are integral with their respectivepole pieces and 9*, 9,--10", 10 are riveted totheir respectivepole-pieces 9 and 10 shown in Fig. 5 and Fig. 7, and are directlyopposite each other. The clearance between the extensions and thearmatures is governed by the height of the spacers 1" and 1 Fig. 7. Whenan electrical impluse is passed through the windings 13 Fig. 5, the twoarmatures are energized and have like poles in the center and like polesat each end. This construction produces consequent oles. They areattracted in the same irection as indicated by the arrows in thedrawing. A reversal of current will cause a reversal in direction of themovement of the armatures; The armatures are fulcrumed at 2" and 2" Fig.5. No adjustment is necessary as the armatures are held in alignmentwith respect to each other by the diaphragm which allows of wide spacebetween the armatures and their respective pole-piece extensions.

Fig. 6 at a, b, 0, and d are shown the polepiece extensions of onepoleieoe. 'Extensions b and a may be blank out and riveted to thepole-piece 9 which is bent to form an extension at each end thereof.

Having thus described my invention, what is claimed is:

1. An electro-Inagnetic device comprising a magnet having pole-pieces,said polepieces, having two pairs of extensions each of said extensionsprojecting toward and spaced directly opposite each other, two separa emoveable armatures, a separate flexible torsional mounting for eacharmature and means for holding said armatures in alignment with eachother, and for spacing said armatures between said pole-pieces.

2. An electro-mechanical transforming device including pole pieces, aplurality of torsionally mounted movable armatures operativel related tosaid pole pieces, and means or combining the movements of saidarmatures.

3. An electro-mechanical transforming device including pole pieces, aplurality of torsionally mounted armatures having free ends operativelyrelated to said pole pieces combined with means for aligning saidarmatures in spaced relation with said pole pieces.

4. An electro-mechanical transforming device including-a plurality ofmovable fulcrumed armatures, a diaphragm, a rod at tached to saiddiaphragm, and means for operatively connecting said armatures to saidrod.

5. An eleetro-mechanical transforming device including a diaphragm, polepieces, a plurality of armatures torsionally mounted and arranged tooperate between said pole pieces, and means for connecting saiddiaphragm to said armatures.

6. An electro-mechanical transforming device including a plurality oftorsionally mounted armatures, and a plurality of pole pieces combinedwith means for aligning said armatures in spaced relation to said polepieces.

7. An electro-mechanical transforming device including pole pieceshaving a lurality of extensions, and a plurality of exibly mountedarmatures having unlike periodicities arranged in spaced relation tosaid extensions.

8. An electro-mechanical transforming device including flexibly mountedarmatures having unlike eriodicities, a diaphragm, and means includingsaid, armatures for actuating said diaphragm.

9. An electro-mechanical transforming device including movable armatureshaving unlike natural periodicities,pole pieces, and means for spacingsaid armatures relative to said pole ieces.

10. An .e ectro-miechanical transrorming device including a plurality ofarmatures, a plurality of torsional mountings for said armatures, aplurality of pole pieces arranged adjacent to said armatures a plural-1ty of connecting means 'for said armatures, and means for actuatingsaid armatures.

1 1. An .electro-mechanical transforming device having a magnetincluding electromagnets within the field of said magnet, saidelectro-magnets arranged to produce consequent poles, a plurality ofmovable members magnetically energized by said electro-magnets, andmeans combined with said electro-magnets and said movable members forproducing mechanical vibrations.

12. Am blectro-mechanical transforming device includingoppositely-disposed pole pieces each having four terminals, alignedbobbins disposed between said pole pieces, windings on said bobbinsarranged to produce a consequent pole, and armature members extendingthrough said bobbins.

13. An electro-mechanical transforming device including a magnet, polepieces for said magnet, a plurality of extensions for said pole pieces,electromagnets arranged between said pole pieces and extensions, andarmatures extending through said electromagnets, said electro-magnetsbeing so arranged as to produce consequent poles in said armature.

14. An electro-nrechanical transforming device includingelectro-magnets, pole pieces and armatures, said electro-magnets beingso disposed relatively to said armatures as to produce consequent polesin said armatures, said pole pieces being so dispose-d relatively tosaid armatures as to cause said pole pieces to attract and repel partsof said armatures when said electro-magnets are energized.

15. An electro-mechanical transforming device including a magnet, polepieces for said magnet, a diaphragm, electro-magnets, a plurality ofarmatures adapted-to be attached to said diaphragm by connecting rodsextending through one of said pole pieces, a pair of spacing membersadapted to receive said pole pieces, a pair of torsional springmountings adapted to receive said armatures and said spacing members,and means for supplying an electric current to said electro-magnets forenergizing said armatures producing a consequent pole at a point midwaybetween said armatures.

161 An electro-mecha-nical transforming device includingelectro-maguets, ole pieces, a plurality of armatures arrangedco-extensively with said electro-magnets, torsional springs for holdingsaid armatures in operative spaced relation to said pole pieces, andsaid electro-magnets adapted to produce consequent poles in saidarmatures.

17. An energy translator comprising a diaphragm, an electro-magnet,several armatures, spring means for suspending each of said armatures,each spring suspended armature having its own natural period of freevibration and lyin within the field of the electro-magnets, an meansforconnecting said armatures to said diaphragm.

18. An energy translator comprising a diaphragm, a magnet, severalarmatures,

each of said armatures within the field of said magnet, a coil of wireabout each of said armatures, means for connecting said coils of wire innon-inductive relation to each other, and a connecting rod from eacharmature to said diaphra 19. An electro-magnetlc device comprising amagnet, several armatures within the field of said magnet, and a' coilof wire about each armature, said coils being con- 10 nected innon-inductive relation to each other.

In witness whereof, I hereunto subscribe 'my name this 14th day of July,A. D. 1925.,

HENRY MERLE WILLIAMSON.

